Photographic-plate holder



No. 6|8,763. Patented Jan. 3|, I899. H. H. ALTSCHWAGER & L. E. JOY.

PHOTOGRAPHS PLATE HOLDER.

(Application filed Dec. 4, 1697.)

2 Shasta-Sheet I.

(No Model.)

Jig? 1.

A TOHNEYS.

m: Norms Perms co. wowu'mou WASHINGTON. o. c,

No. 6l8,763. Patented Jan. 3|, I899. H. H. ALTSCHWAGER & L. E. JOY.

PHOTOGRAPHIC PLATE HOLDER.

(Applicntion fllndjDec. 4, 1897.) (N0 Model.) 2 Sheets-8haat 2.

ATTORNEYS.

THE NORRIS PETERS c0. PNo To-umo. WASHINGTON. u. c.

UNITED STATES PATENT OFFICE.

HENRY H. ALTSOHXVAGER AND LOUIS E. JOY, OF MINNEAPOLIS, MINNESOTA.

PHOTOGRAPHlC-PLATE HOLDER.

SPECIFICATION forming part of Letters Patent No. 618,763, dated January 31, 1899.

Application filed December 4, 189 '7. Serial No. 660,759. (No model.)

To all whom it may concern.-

Be it known that we, HENRY H. AL'rscHwA- GER and LOUIS E. JOY, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and Improved Photographic-Plate Holder, of which the following is a full, clear, and exact description.

This invention relates to improvements in photographic-plate holders; and the object is to provide a simple means whereby the plate may be shifted to successively expose several portions of its surface to produce what are termed diamond-shaped pictures and whereby the entire plate can be utilized, thus resulting in economy of plate and paper-stock.

Vi e will describe a plate-holder embodying our invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indi' cate corresponding parts in all the views.

Figure 1 is a face view of our device with the front of the frame removed. Fig. 2 is a view taken on the line 2 2, Fig. 3. Fig. 3 is a sectional View on line 3 3, Fig. 2. Fig. 4 isa horizontal sectional view, and Fig. 5 is a rear view illustrating the adjusting devices.

The device comprises a frame 1, designed to be attached to the rear end of a camera in the usual manner. To the rear end of the frame a back or door 2 is hinged, and movable across an opening in the front portion is a dark slide 3, and inward of the dark slide is a stop-slide This stop-slide is provided with an opening 5, which in this instance is diamond-shaped and has an area substantiallyequal to one-sixth of the plate area, and the center of this opening, as indicated at as, is designed to be in a horizontal line with the axis of the lens.

Mounted to slide transversely on the outer side of the back or door 2 is an adj Listing-disk (S. This disk has tongues 7 on its inner side engaging in guideways 8, secured to the back or door, and the disk also has a tubular hub extended through a slot 9 in the back or door. As a means for holding the disk 6 in its adjusted position a spring lOis employed. This spring is secured at one end to the back or door, and at its free end it has a lug 11, de

signed to engage in either one of the holes 12 formed through the disk.

A knob 13 for rotatively adjusting the platecarrying frame has its tubular shaft ex tendedthrough the hub of the disk 6, and on the inner end of this tubular shaft a frame 14 is mounted to slide. To one end of the frame 14 a channel-bar 15 is secured," and spring fingers 16 are secured to the other end. One end of a plate y is designed to be engaged in the channel of the bar 15, while the other end is to be engaged by the fingers 16, and as a further means for holding the plate firmly a spring 17 may be employed. This spring 17 is secured at its center to the frame 14, and its ends are adapted to bear against the rear face of the plate.

Attached to the inner end of the tubular shaft extended from the knob 13 is a plate 18, having its edges engaging in grooves formed in the frame 14:. A rack 19 is attached to one side of the frame 14 and engaged by a pinion 20, secured to the inner end of a shaft 21, extended through the tubular shaft of the knob 13, and to the outer end of the shaft 21 a knob or finger-piece 22 is attached. By means of this rack-and pinion mechanism the plate-carrying frame may be moved or adjusted transversely of its axis of rotation for a purpose to be hereinafter described.

The plate-carrying frame may be held in its rotatively-adjusted position by means of a spring-finger 23, attached to the knob 13 and adapted to engage its free end in either one of the notches 24, formed in the disk 6. As the device as shown in the drawings provides for making six exposures of a plate' that is, for making six pictures on one plate there are notches 24 equally spaced apart, eight of said notches being shown in Fig. 5, so that after one exposure the plate may be turned until the finger 23 engages in the next notch 24, which determines the correct position of the plate for the next exposure. A

spring-finger 25 on the knob 22 is designed to be successively exposed through the opening 5, while the light is stopped out from the remainder of the plate by the stop-slide. As indicated in Fig. 1, the axis of the plate is such that by turning it the fourlower squares may be exposed one after the other. Then to expose the other two squares the plate-carrying frame must be shifted by means of the rack-and-pinion mechanism to bring the axis in line with the lower inner corners of the two upper squares.

By providing means for adjusting the platecarrying frame 1 the three squares at one side of the plate may be successively exposed, and then after shifting the plate laterally the other three squares may be exposed.

lVhile we have stated a main object of the invention as the providing of diamond-shaped pictures, it is obvious that other shaped pictures maybemade and that we have provided a multiple holder for general use.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. A photographic-plate holder, comprising a frame, a disk mounted to slide on the back of the frame, a tubular shaft extended through the hub of the disk, a plate-carrier mounted on the inner end of the shaft, means for holding the shaft as adjusted relatively to the disk,means for moving the plate-carrier transversely of its axis while the disk remains staiiouary and a stop-slide forward of the carrier and having an opening, substantially as specified.

2. A photographic-plate holder, comprising a frame, a transversely-adjustable disk on the back of the frame, means for holding the disk as adjusted, a tubular shaft extended through the hub of the disk, a plate-carrying frame mounted to slide on the inner end of the tubular shaft, a shaft extended through the tubular shaft, a pinion on said last-named shaft, and a rack on the plate-earrying frame and engaged by the pinion, substantially as specified.

3. A photographic-plate holder, comprising a frame, a plate-carrying frame in the firstnamed frame, means for rotating the plate carrying frame, means for holding the frame in its rotated position, means comprising a rack and pinion for moving the holding'fram c transversely of its axis, and means for holding the frame as transversely adjusted, substantially as specified.

4. Aphotographic-plate holder, comprising a frame mounted to rotate, a rack-and-piniou mechanism for moving the plate longitudinally, a channel-bar at one end of said frame, and spring-fingers at the other end of the frame, substantially as specified.

HENRY H. ALTSCHWAGER. LOUIS E. JOY. \Vitnesses:

WILL. ALTSCHWAGER, FRANCES Nuuxuar'. 

